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- Title
Crystallization of low-density polyethylene embedded inside zinc oxide nanoparticle percolating network.
- Authors
Liang, Guo-Dong; Liu, Ting-Ting; Qin, Wang-Ping; Zhu, Fang-Ming; Wu, Qing
- Abstract
The crystallization behavior of low-density polyethylene (LDPE) embedded inside zinc oxide (ZnO) percolating network (LDPE/60 vol% ZnO) was investigated via differential scanning calorimetry (DSC), and compared with those of LDPE bulks (neat LDPE and LDPE/1.15 vol% ZnO). Results revealed that embedded LDPE possessed by far shorter half-crystallization time at elevated crystallization temperatures than LDPE bulks, whereas at lower crystallization temperatures longer half-crystallization time was observed. Isothermal crystallization kinetics study revealed that the Avrami exponent of embedded LDPE varied in range of 1.8-2.0, indicating quasi-two-dimensional crystallization with heterogeneous nucleation, contrasting with about 3 for LDPE bulks. Moreover, crystallization activation energy of embedded LDPE was much larger than that of neat LDPE due to geometric confinement effect of ZnO network. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers
- Subjects
CRYSTALLIZATION; LOW density polyethylene; ZINC oxide; DIFFERENTIAL scanning calorimetry; TEMPERATURE
- Publication
Polymer Engineering & Science, 2012, Vol 52, Issue 6, p1250
- ISSN
0032-3888
- Publication type
Article
- DOI
10.1002/pen.23065